Hi, I've been offered to purchase this nice black dial seamaster from the sixties I think. I know some seamasters such as the 300 never came with white date on black dial. Could this one be authentic or do you think it was changed at some point? Sorry I don't have any more info or pictures. /Ed
I did a quick google search and found several photos of black dial Seamaster Calendars with white date wheels.
From that picture it is impossible to say whether that is an original dial. Bad photos can mean merely an inept photographer or that someone is hiding something. Be aware that the vast majority of black dial Seamasters are redialled when you make up your own mind.